July 15, 2008

Spirent Communications plc (LSE:SPT), a global provider of performance analysis and service management solutions, today announced that Horry Telephone Cooperative (HTC), Inc. selected Spirent to supports its network service monitoring and remote diagnostics operations. HTC, the nation's largest telephone cooperative serving business and residential subscribers in Horry and Georgetown counties in South Carolina, has deployed Spirent REACT(R) Test Management Operations Support System (OSS) to ensure network reliability and improve customer satisfaction.

While voice applications continue to be the biggest revenue generator for telecommunications service providers, especially operators serving regional and local communities, there is a growing demand for services such as digital cable and high-speed Internet access. This is increasing the pressure to deploy test solutions that enable carriers to conduct complex test strategies, provision and manage multiple services in a multi-vendor network environment.

"HTC is committed to delivering the most reliable communications services possible at the best possible value to our members," said Frank Sarvis, Chief Executive, Network Engineering of Horry Telephone Cooperative, Inc. "After an extensive search, we decided on Spirent REACT since its enables us to cost effectively deliver the highest quality of service (QoS) for multiple services with the ability to adapt to future testing needs."

"Spirent has long been the important player in the service assurance arena with our market leading remote diagnostics and hand-held solutions," said John Cunningham, Vice President Service Assurance at Spirent Communications. "This engagement with HTC, re-affirms our commitment to serving the requirements of the service provider community."

Spirent REACT enables HTC to streamline its network services testing process by providing remote testing coverage in a configuration that reduces expensive hardware investments. Furthermore, this initial deployment not only addresses the current needs of HTC, it also provides the scalability and flexibility to expand the network and effectively monitor Triple Play services available to its subscribers. With a distributed architecture, Spirent REACT gives HTC unsurpassed visibility into network services to manage customer experience and QoS.

Spirent REACT supports technologies such as analog special services, DS1/E1/DS3/E3, high-speed DSL and optical SONET networks in the world's largest and most complex data and voice networks. It provides an integrated service view with the ability to automate complex test strategies via expert dialogs, enabling providers to mainstream complex services. REACT's multiple software modules and distributed architecture provide the basis for scalable solutions integrating visibility across technology layers, vendors and networks.

For more information please visit http://www.spirent.com/go/react.

About HTC

HTC, Inc. is the nation's largest telephone cooperative and the 25th largest telephone company. HTC offers local telephone service, long distance, Digital Wireless, Digital Cable, High-Speed Internet Access, and advanced Business Services such as Remote Recovery Services, Local Area Network (LAN) and Wide Area Network (WAN) design, firewall and Virtual Private Network (VPN) security. HTC Communications, LLC, a wholly owned subsidiary of HTC, Inc., offers local telephone service in the city of Conway, Myrtle Beach, North Myrtle Beach, Little River, Pawleys Island and the city of Georgetown. A full menu of communications services are available from HTC Communications including, local telephone service, long distance, Digital Wireless, Digital Cable and High-Speed Internet access. HTC also provides Fiber to the Home technology called HTC Bluewave, a state-of-the-art fiber optic network that delivers unparalleled bandwidth for extremely high-speed Internet access and data transmittal, 100 percent digital cable TV video, and traditional voice service through a single delivery point to a customer's home.

About Spirent Communications plc

Spirent Communications (www.spirentcom.com) is a global provider of integrated performance analysis and service assurance systems that enable the development and deployment of next-generation networking technology such as Internet telephony, broadband services, 3G wireless, global navigation satellite systems, and network security equipment. Spirent Communications' solutions are used by more than 1,700 customers in 30 countries, including the world's largest equipment manufacturers, service providers, enterprises and governments. Based in Sunnyvale, CA, Spirent Communications has 1,500 employees worldwide.

Spirent Communications plc Ordinary shares are traded on the London Stock Exchange (ticker:SPT). The Company operates a Level 1 American Depositary Receipt ("ADR") programme with each ADR representing four Spirent Communications plc Ordinary shares. The ADRs trade in the US over-the-counter ("OTC") market under the symbol SPMYY and the CUSIP number is 84856M209. Spirent Communications' sales to the United States government are made through Spirent Federal Systems Inc. www.spirentfederal.com

Spirent, Spirent Communications and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved.

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